diff --git a/packages/destination-actions/src/destinations/hyperengage/__tests__/validateInput.test.ts b/packages/destination-actions/src/destinations/hyperengage/__tests__/validateInput.test.ts
index 00417afb929..995e432024b 100644
--- a/packages/destination-actions/src/destinations/hyperengage/__tests__/validateInput.test.ts
+++ b/packages/destination-actions/src/destinations/hyperengage/__tests__/validateInput.test.ts
@@ -28,6 +28,22 @@ const fakeIdentifyData = {
   account_id: 'testAccount'
 }
 
+const fakeIdentifyFirstLastData = {
+  event_id: 'test-message-cz380xxe9kn',
+  page_title: 'Title',
+  event_name: 'test',
+  event_type: 'identify',
+  first_name: 'testFirst',
+  last_name: 'testLast',
+  email: 'testEmail',
+  traits: {
+    required: 'false'
+  },
+  timestamp: '2023-09-11T08:06:11.192Z',
+  user_id: 'test',
+  account_id: 'testAccount'
+}
+
 const fakeGroupData = {
   event_id: 'test-message-cz380xxe9kn',
   page_title: 'Title',
@@ -70,6 +86,12 @@ describe('validateInput', () => {
       expect(payload.traits.name).toEqual(fakeIdentifyData.name)
       expect(payload.traits).toHaveProperty('required')
     })
+
+    it('should combine first_name and last_name without trailing brace', async () => {
+      const payload = validateInput(settings, fakeIdentifyFirstLastData, 'user_identify')
+      expect(payload.traits.name).toEqual('testFirst testLast')
+      expect(payload.traits.name).not.toContain('}')
+    })
   })
 
   describe('test group payload', () => {
@@ -81,7 +103,21 @@ describe('validateInput', () => {
       expect(payload.traits.industry).toEqual(fakeGroupData.industry)
       expect(payload.traits.website).toEqual(fakeGroupData.website)
       expect(payload.traits).toHaveProperty('required')
-      expect(payload.local_tz_offset).toEqual(60)
+      const expectedOffsetMinutes = (() => {
+        const parts = new Intl.DateTimeFormat('en-US', {
+          timeZone: fakeGroupData.timezone,
+          timeZoneName: 'shortOffset' as Intl.DateTimeFormatOptions['timeZoneName']
+        }).formatToParts(new Date())
+        const tz = parts.find((p) => p.type === 'timeZoneName')?.value
+        const m = tz?.match(/GMT([+-])(\d{1,2})(?::?(\d{2}))?/)
+        if (!m) return undefined
+        const sign = m[1] === '-' ? -1 : 1
+        const hours = Number(m[2])
+        const mins = m[3] ? Number(m[3]) : 0
+        return sign * (hours * 60 + mins)
+      })()
+      expect(typeof payload.local_tz_offset).toBe('number')
+      expect(payload.local_tz_offset).toEqual(expectedOffsetMinutes)
     })
   })
 
diff --git a/packages/destination-actions/src/destinations/hyperengage/validateInput.ts b/packages/destination-actions/src/destinations/hyperengage/validateInput.ts
index 0e22c727d8e..3dfbf37e250 100644
--- a/packages/destination-actions/src/destinations/hyperengage/validateInput.ts
+++ b/packages/destination-actions/src/destinations/hyperengage/validateInput.ts
@@ -32,11 +32,18 @@ export const validateInput = (
 
   // Resolve local_tz_offset property, we can get local_tz_offset from the input context.timezone
   if (input?.timezone) {
-    const offset = new Date()
-      .toLocaleString('en-US', { timeZone: input.timezone, timeZoneName: 'short' })
-      .split(' ')[3]
-      .slice(3)
-    properties.local_tz_offset = parseInt(offset) * 60
+    const parts = new Intl.DateTimeFormat('en-US', {
+      timeZone: input.timezone,
+      timeZoneName: 'shortOffset' as Intl.DateTimeFormatOptions['timeZoneName']
+    }).formatToParts(new Date())
+    const tz = parts.find((p) => p.type === 'timeZoneName')?.value
+    const m = tz?.match(/GMT([+-])(\d{1,2})(?::?(\d{2}))?/)
+    if (m) {
+      const sign = m[1] === '-' ? -1 : 1
+      const hours = Number(m[2])
+      const mins = m[3] ? Number(m[3]) : 0
+      properties.local_tz_offset = sign * (hours * 60 + mins)
+    }
     delete properties.timezone
   }
 
@@ -60,7 +67,7 @@ export const validateInput = (
     } else if (input?.first_name || input?.last_name) {
       properties.traits = {
         email: input?.email,
-        name: `${input?.first_name} ${input?.last_name}}`,
+        name: `${input?.first_name} ${input?.last_name}`,
         created_at: input?.created_at,
         ...properties.traits
       }